Patents by Inventor Yatsushi Yatsuda

Yatsushi Yatsuda has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7622748
    Abstract: Whereas incandescent light bulbs and other similar light sources known in the related art emit light in all directions, LED lamps can emit light in a single direction, and this is manifested in the problem of being unable to achieve light distribution characteristics satisfied by conventional headlamp designs. In accordance with an embodiment of the disclosed subject matter, an LED lamp for a light source of a headlamp can include an LED chip in the vicinity of the focus of a projection means and a shielding member covering a portion of the LED chip in a formation allowing a light distribution characteristic suitable for a vehicle front-illumination light to be obtained when light from the LED chip is magnified and projected in an illumination direction by a projection lens or the like constituting the projection means. Accordingly, accurate light distribution characteristics can be obtained in a simple manner by projecting in the illumination direction using the projection lens.
    Type: Grant
    Filed: December 24, 2007
    Date of Patent: November 24, 2009
    Assignee: Stanley Electric Co., Ltd.
    Inventors: Yatsushi Yatsuda, Takashi Ebisutani, Teruo Koike, Takuya Kushimoto, Ryotaro Owada, Masafumi Ohno, Takashi Futami